Probably something has happened between you and your husband, or at least to your husband, but he may not be telling you about it. Firstly, you should try to dig that out of him. Secondly, don't kill yourself now even if life feels miserable. Sometimes affection of another can be the world, but the again perhaps it is not that important when it is not there. You will get over it, or at least the pain grows less. Give it some time.